Stove-pipe damper



C. KATHAN. Stove Pipe Damper.

Patented July 25, 1865.

Inventor:

Witnesses:

N, PETERiPhuhrLithognpher. Walhington. n. c

PATENT OFFICE.

CHAS. KATHA'N, OF HARDIN, IOWA.

STOVE-PIPE DAM P'E R.

Specification forming part of Letters Patent No. 48,952, dated July 25,1865.

To all whom it may concern:

Be it known that I, CHARLES KATHAN, of Hardin, in the county of Claytonand State of Iowa, have invented a new and Improved Stove- Pipe Damper;and I do hereby delare that the following is a full, clear, and exactdescription thereof, which will enable other skilled in the art to makeand use the same, reference being had to the accompanying drawings,inwhieh Figure 1 is a plan view of my damper. Fig. 2 is a centralcross-section taken in the line 00 ac, Fig. 1, showing the position ofthe damper in the stove-pipe.

Similarlettersofreferenceindicatelikeparts.

My invention consists in the employment or use of two revolving disks,arranged one each side of the central portion or frame proper of adamper for stoves and other heaters, in such relation thereto that theescape of the heated air or smoke may be controlled as desired, allsubstantially as hereinafter described.

To enable others to understand my invention, I will proceed to describeit.

A represents the central portion or frame proper of the damper, which'ismade circular in form and of a size to correspond with the interiordiameter of the stove-pipe, it being the handle or knob by which it isrevolved, and b b itsjournal. Through this central portion of the framea series of holes or openings, 0, are made, extending from near itscircumference to nearly its center, through which the smoke or heatedair is permitted to pass.

B B are two disks, one arranged on each side of the central portion, A,of the damper and fitted to revolve on an axis or hub, d, extending outfrom each side of the said central portion, A, of the damper. Thesedisks B B are like each other in construction, each having a series ofholes or openings, 0, through them similar to those in the centralportion, A, of the damper. The space f between these holes or openings eare bulged outward, which permits a freer access of the smoke or heatedair to the holes oropening than if the said space were left flat. Thesaid disks B B are caused to revolve by moving up or down a lever, g,projecting from the side of the pipe opposite to the handle or knob a,the said lever g having a forked end, h, which plays upon a rod,z',connected to both disks, said rod i also preventing the disks fromrevolving too far in one direction, while a similar rod, '5, prevents itrevolving too far in the other direction.

From the above description it will be seen that the damper, as a whole,may be used as an ordinary damper, which by being turned edge wise, willleave a free passage for the smoke to passto the chimney; but whenturned sidewisethat is, with its face across the area of the pipe, andthe openings in the disks and central portion made to correspond witheach other-quite a free draft will be insured, which may at any momentbe lessened by revolving the disks so as to cause the spacesf to coverthe openings in the central portion or frame. hen, indeed, the damper isclosed to its fullest extent, yet there will be provision for the smoketo creep through the damper, as well as the gases, if coal is used,thereby providing against the contingency of either of them escapinginto the room, as would be the case were a perfectly tight damper leftclosed at an improper time.

NVhat I claim asmy invention, and desire to secure by Letters Patent,is- Y The revolving disks B B, arranged to operate in connection withthe central portion or frame, A, of a damper for stoves and otherheaters, substantially as herein specified.

The above specification of my invention signed by me this 27th day ofApril, 1865.

CHARLES KATHAN.

\Vitnesses:

A. J. J ORDEN, J. O. HOXSEE.

